Nevertheless, the following 4 variants are defined as pathogenic/likely pathogenic in the ClinVar30 and/or Decipher31 databases, which adds to the probability that they confer risk to schizophrenia: (1) The missense variant in CSNK2A1, which encodes an alpha subunit of casein kinase II, is pathogenic for Okur-Chung neurodevelopmental syndrome (OMIM #617062), an autosomal dominant disorder characterised by intellectual disability and dysmorphic facial features. Here, CSNK2A1 is linked to Okur-Chung neurodevelopmental syndrome.